How can heavy metals be effectively reduced in the fuel stream?

• A. Increase burning temperature
• B. Remove batteries
• C. Implement stricter regulations
• D. Improve air flow

Answer: (B)

Removing batteries from the fuel stream can effectively reduce heavy metals because batteries often contain several heavy metals, including lead, cadmium, and nickel. When batteries are improperly disposed of or included in the fuel stream, they can release these heavy metals during the combustion process. By eliminating batteries from the fuel source, the overall concentration of heavy metals is reduced, which minimizes the potential release of harmful emissions into the environment.

Implementing stricter regulations may help in controlling heavy metal emissions over time, but removal of the source is a direct approach to reduce their presence in the fuel stream. Increasing the burning temperature and improving airflow may influence the combustion process and emissions, but they do not specifically target the removal of heavy metals contained within the fuel.